Abstract
In this paper, for purification of eutrophic Lake Water, immobilized nitrobacteria denitrifying bacteria made from radiation copolymerization at low temperatures by means of glass forming monomers, i.e. 2 hydroxyethyl acrylate (HEA) and polyethylene glycol dimethacrylate (14G) have been used. The Sequencing Batch Reactors (SBR) system and cell proliferation of nitrobacteria denitrifying bacteria techniques were carried out in order to treat eutrophic lake water. The results showed that the removal efficiencies of immobilized nitrobacteria denitrifying bacteria for Total N (TN), NH + 4 N and COD Cr were 70%, 84% and 68%, respectively. The results demonstrated that the optimum temperature of immobilized nitrobacteria denitrifying bacteria system was 28℃. Immobilized nitrobacteria denitrifying bacteria was more resistance to low temperature(10℃). The dissolved oxygen (DO) concentration have effect on removal efficiencies for Total N(TN).
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